The mainstay of the community-run Grand Riviere Nature Tour Guide Association are early-hours excursions to watch turtles lay eggs on the village beach. Each year, between March and August (and sometimes into September), mature leatherbacks and other species such as hawksbill drag themselves up from the shoreline, dig a deep hole with their powerful flippers and deposit a clutch of eggs into the sand. Hatchlings emerge about eight weeks later and make a mad dash for the sea, guided by the moonlight; few survive, however, though locals do gather up any that unearth themselves by day and release them after dark. Watching the laying process is a memorable experience and shouldn't be missed if you visit at the right time. Don't try to do this independently; turtles have protected status in Trinidad and Tobago, and you need a permit to enter the beach at night during the season.